Process of making impaling-rolls for raisin-seeders.



I A. R. THOMPSON. PROCESS OF MAKING IMPALING ROLLS FOR RAISIN SBEDBRS.

APPLICATION FILED PEB.21, 1910. 1,38 ,682, Patented Sept. 17, 1912.

2 SHEETS-1331 1.

7v A. R. THOMPSON. PROCESS OF MAKING IMPALING ROLLS FOR RAISIN 'SEEDERS.

' APPLIOATIONFILBD I'EKZL'IQIO.

1 3 62 Patented Sept. 17, 1912. 2 sums-3mm 2.

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miqsedx ALBERT RILEY 'rnomrson, or sen JOSE, CALIFORNIA, ASSIGNOR TO ANDERSON- BARNGROVER MANUFACTURING COMPANY, or SAN JOSE, CALIFORNIA, A cou- PORA'IION OF CALIFORNIA.

'JEROCESQ OF .MAKING IMPALING-ROLLS FOR RA I SIN-SEEDERS.

To all whom it may concern Be it'known that I, ALBERT n/rnom:

' ripheral pins which serve as'impaling means and which are arranged more or less closely throughout the periphery of the roll, and ,required to be spaced apart and held firmly in their proper positions during the operation of the roll.

.The main object of the present invention 1 is to provide means whereby an impaling roll may be constructed with peripheral 'pins thereon supported, in rigid and firm position.

Another object of the invention is to in-.

Sure that the outer ends of the pins will be equidistantfrom the axis of the roll.

-'Another object of the invention is to form thesupporting roll with means for sustaining the inward pressure on the pins, in-

curred in the 'impaling operation.

A further object of the invention is to provide an impaling roll in which the peripheral face of the roll from which the pins extend presents a smooth continuous surface, Without pits or roughness.

casting.

A further object of the invention is to provide for construction of the roll with peripheral guide flanges for the stripping means. I Anotheriobject of the invention is to provide for construction of the impaling i'oll .withperipheral pins in staggered relation, so that the pins are disposed in equidistant arrangement in all directions. e

Other objects of the inventlon will appear hereinafter.

The procem consists essentially in providing a support in which the pins-are detachably held in the position which theyarc.

to occupy on the roll, inclosing said support in a mold-,- pouring melted material into said mold, and subsequently removing the support leaving the pins embedded in the The process Specification of Letters Patent.

further consists in casting Patented Sept. 17 1912.

Application filed February 21, 1910. Serial No. 545,221.

the roll body on to the pins, as stated, and sub ecting the material while in the mold to a force or pressure tending to force it against the supporting member for the pins, whereby the material is caused to tightly fill the spaces between the pins, so as to. avoid any looseness of the pins and to present a,smooth peripheral face for the roll. This pressure is preferably produced by centrifugal aotion, the mold being subjected to whirling action during the casting operation rte apply the centrifugal force on the melted material.

The pins are supported in the stated position by a supporting means which is'built up of separable sections, thepins being inserted between such sections and being held thereby, and the parts being clamped together to form a rigid support which is insorted in the mold in the casting operation,

Referring to the drawings t-Figure lis a vertical section of the means for supporting the pins in the formation of the impaling roll. Fig. 2 is a side elevation of one of the split rings serving to support the pins. F ig;

3 isaside elevation of another of the split rings, provided with pin-recelving notches.

Fig. 4, is a perspective view showing the manner of applying the pins to the supporting member. Fig. 5 is a vertical section of the supporting member and the cont'eining mold in position for castingthe roll. .Fig. 6 is a lan thereof. Fig. 7 1s a side eleva-v tion 0 the apparatus whereby centrifugal pressure is applied to the material during the casting operation. Fig 8 1s aislde elevation of a finished roll, and Fig. 9 is a face View of a portion thereof, showing the arrangement of the pins. Fig. 10 1s a perspective of a portion of the roll.

The supporting member for the pins comprises two, outside washers or flat rings 1,

have radial slots, recesses, or notches 5 to receive the pins, all of the washers 1, o and formed with bolt holes 2, and a plurality of 4 being of the sameouter diameter, and the inner diameter of the Washers 3 being the same as that of the washers 1, but the innerdiameter of the washers 4 being somewhat smaller to form channels 8 between the washers 4, the slots 5 extendingfrom the bottom of these grooves. The intermediate washers .3 and 4 are provided with bolt holes 6, 7 which are so disposed in successive washers that when the parts are assembled the slots or notches will be in staggered relation.v Each of the intermediate rings 3 and 4 are split, as indicated at 9, so as to divide the washer into'two sections to facilitate drawing from the east-roll, as hereinafter set forth.

The above described parts are'as sembled as shown in Fig. 1, a washer 1 being placed at the bottom, a milled washer 3 being placed thereon, followed by a plain washer 4, then a milled washer, and so on, the milled and plain washers alternating and the pack of washers being capped by the top washer 1, the successive washers being Y of the iinpaling pins.

tant from the surrounding pins.

The impaling pins, indicated at 11, are inserted in the slots or. notches 5 while the parts are assembled, as above described, as illustrated in Fig. 4, the parts being held by the bolts 10 in such relat1on as to enable insertion of the pins with some pressure and to retain the pins in position by frictional engagement therewith. On account of the staggered relation of the slots, as above described, the pins when so inserted in position will be presented in staggered relation from oblique rows across'the faceof the support, and each pin being substantially equidis- Thc support with the pins is then placed in the mold, shown in Figs. 5 and 6. Said mold may comprise; a lower plate 13, and an upper plate 14, said plates having recesses 15, 16 to receive the nut and head of the bolts 10 and having openings 17 to receive clamp bolts 18 for the mold. The members or plates Band 14 are provided with annular seats or r abbets 20' for engaging the outside plates *1 of the pin supporting member, and the lower member of the plate 13 is pro' vided with a circular seat or recess21 to receive a core or inner member 22which titswithin said seat and may extend into contact or proximity with the inner ends of the impaling pins 11. An upward extension 23 may be provided for this inner member 22, the top 14 having a central openthe body of the roll may consist of any su'itable material, for example, any metal which is sutficiently fusible for the purpose. The

supporting member with the pins having been inserted between the mold members lil and 14 and clamped therein by the bolts 18, said metal, in melted condition, is oured into the space between the inner mein er 21, the bottom member 13, and the supporting member consisting of the washers 1, 3, -t,

and said metal runs into'and occupies the space between thepins 11. In order to insure that the metal finds its way .to every part of this space and that there are no blow holes, or'any loose joints, between the pins and metal, I provide for applying pressure to the metal while it is still in fluid condition, and for this purposelprefer' to use centrifugal force produced by subjecting the body of metal to a whirling action. An apparatus suitablefor this purpose is shown in Fig. 7, wherein :26 designates a frame or support, 27 a rotary table inounted on the vertical bearing of the supporting member 26, operating means such as a handle 28, and connecting means or gearing 29 connecting said handle with the shaft 30 of the table 27 so as to impart to said table a-rapid rotary movement. The mold 13, 14, etc, is

v placed on the rotary table 2? and is subject- -.ed by the described mechanism to rapid ro-.

tation, causing the pins 11 to be forced outwardly into contact with the bottom of slots 5, this rotation being continued while the metal is poured into the mold in a fused state, thereby causing the metal to press outwardly by centrifugal force so as to completely fill the lnterstices or-spaccs between the pins and the supporting parts, giving a solid, continuous casting without blow holes and insuring that the pins will be embedded tightly in the casting.- The metal also runs nto the channels 8 forming ribs in the casting. 7 Table 27 has pins 31 to engage mold 13.

The bottom of slots 5 being equidistant from the inner face of the supporting member, the outer ends of the pins in the roll will be equidistant from the roll face and also equidistant from the roll axis,

It will be seen that in securing the pins in position within the mold, it is necessary only-t0 handle the brass rings,thus making it much easier than if it were necessary to handle the mold itself in this operation, as the parts-of the mold will generally be of cast-iron and comparatively heavy.

The roll having been cast ontothe pins, as abovedescribed, and having been allowed to cool, the supporting member or ring consisting of the built-up plates 3, 4:,

etc, is removed bodily from the mold or clamping form, the fastening bolts 18 removed from the supporting ring or member, and the first blank washerjlifted off. Then the first slotted Washer is lifted ofi" the first row of pins. The second blank washer is interlocked between the first and second row of pins, and to withdraw the same it 'is necessary to draw each of the sections thereof radially outward to free it from the pins. The second slotted washer may then be lifted up into the space which was occupied by the second blank washer, and the two sections thereof may then be drawn radially outward in the same manner as with the withdrawal of the second blank washer. In this manner each of the intermediate wash ers may be withdrawn and the cast'roll with the pins embedded therein may be lifted oi? the bottom blank washer.

' The roll 34 formed as above described will have a plurality of peripheral ribs or such diameter that it does not extend to the inner ends of the pins 11, so that "when the metal is poured as described, it will extend under the inner ends of the pins,-as shown at 33 in Fig. 10, forming a support against the inward pressure on the pins in the impaling operation.

What I claim is 1. The process of making an impaling roll which consists in supporting pins in a peripheral portion of an annular mold, r0

tating the'mold to 'cause the pins to move outwardly, arresting such outward movement at definite distancefrom the center of 3. The process of making an impaling roll, which consists in normally supporting pins in a peripheral portion of a mold, rotating the mold to cause the pins to move outwardly, arresting such outward movement at definite distance from the peripheral portion of the mold, and casting material into the mold.

4. The process of making an impaling roll, which consists in normally supporting pins in a peripheral portion of a mold, rotating the mold to cause the pins to move outwardly, arresting such outward movement at definite distance from the peripheral portion oi. the mold, and casting mate rial into the mold, said cast material extending under the inner ends of the'pins.

In testimony whereof, I have hereunto set my hand at San J ose, California, this 14th day of February; 1910.

ALBERT RILEY THOMPSON.

In presence of- F. E. WEAVER, I F. BURRELL. 

